How many minutes (min) will it take for a car that is moving at 8.0 x 10 mi/h to travel 200. km?

Questions

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1- The Empire State Building is 1,454 feet tall. What is this height in km?

2- What is the price of gasoline in $/L if you pay 26.6 dollars for 9.30 gallons of this combustible?

3- How many minutes (min) will it take for a car that is moving at 8.0 x 10 mi/h to travel 200. km?

4- What is the area in square meter of a laboratory that is 0.020 km long and 1.0 x 10 m wide?

5- The normal concentration of magnesium (Mg) in blood ranges between 1/ and 2.2 mg/dL. If the human body normally contains 6 quarts of blood, how many grams of Mg does it contain? Use the greater level for your calculations.